MDS PREP
Base of skull can be viewed by
1. Towne"s projection
2. Submentovertex
3. PA view of skull
4. Both A and B
Radiology
Answer: 4
The base of the skull can be viewed by both Towne's projection and Submentovertex.
Film exposed to light during development will appear
1. Dark
2. Light
3. Clear
4. Blurred
Radiology
Answer: 1
When film is exposed to light during the development process, it results in overexposure, leading to a dark appearance on the developed film. This is due to the silver halide crystals being activated by light, which causes them to darken when developed.
Which of the following is true of paralleling cone technique
1. The radiopacity of the zygoma is superimposed on the roots of third molars
2. Easy to place with the film holder
3. Less of gag reflex
4. No need to sterilize the firm holder
Radiology
Answer: 2
Which of the following is true of the paralleling cone technique: it is easy to place with the film holder.
Ankylosis of TMJ can be best viewed in
1. Lateral oblique view
2. Lateral view
3. Transcranial
4. PA view
Radiology
Answer: 3
Ankylosis of TMJ can be best viewed in transcranial view.
Best radiograph for viewing # of maxillary bone
1. Submentovertex
2. PA view
3. Waters view
4. Towne"s projection
Radiology
Answer: 3
The best radiograph for viewing the maxillary bone is Waters view.
In which TMJ view central X-ray passes through sigmoid notch
1. Infracranial
2. Frontal view
3. Transcranial
4. Transorbital
Radiology
Answer: 1
In the TMJ view, the central X-ray passes through the sigmoid notch in the infracranial view.
The ingredient of the fixing solution of the X-ray is
1) Hydroquinone
2) Elon
3) Sodium bisulphate
4) Acetic acid
Radiology
Answer: 4
Acetic acid is a key ingredient in the fixing solution used in radiography. It acts as a stop bath, neutralizing the developer and maintaining the acidic environment necessary for proper fixation. Hydroquinone and elon are developer agents, while sodium bisulfate is not typically part of the fixing process.
Waters projection is useful for eveluating
1. Frontal and ethmoidal sinuses
2. Maxillary sinus
3. Zygomaticofrontal suture and nasal cavity
4. All of the above
Radiology
Answer: 4
Waters projection is useful for evaluating all of the above: frontal and ethmoidal sinuses, maxillary sinus, zygomaticofrontal suture and nasal cavity.